(function () {
    // 邮箱正则表达式
    const emailReg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
    // 手机号正则表达式
    const mobileReg = /^(13[0-9]|14[0-9]|15[0-9]|17[0-9]|18[0-9])\d{8}$/;
    //身份证正则表达式(15位)
    const isIDCard1 = /^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$/;
    //身份证正则表达式(18位)
    const isIDCard2 = /^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{4}$/;
    // 加权因子
    var Wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1];
    // 身份证验证位值.10代表X  
    var ValideCode = [1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2];
    // 身份证省份编码
    var city = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外 " };
    //18位身份证需要验证最后一位校验位
    function isTrueValidateCodeBy18IdCard(code) {
        var flag = true;
        code = code.split('');
        var sum = 0;
        var ai = 0;
        var wi = 0;
        for (var i = 0; i < 17; i++) {
            ai = code[i];
            wi = Wi[i];
            sum += ai * wi;
        };
        ValideCode[sum % 11] == code[17] ? flag = true : flag = false;
        return flag;
    };

    module.exports = {
        testEmail: email => {
            var flag = true;
            (!emailReg.test(email)) ? flag = false : flag = true;
            return flag;
        },
        testMobile: mobile => {
            var flag = true;
            (!mobileReg.test(mobile)) ? flag = false : flag = true;
            return flag;
        },
        testID: idNumber => {
            idNumber = idNumber + "";
            var flag = true;
            city[idNumber.substr(0, 2)] ? flag = true : flag = false;
            (isIDCard1.test(idNumber)) ? flag = true : flag = false;
            (isIDCard2.test(idNumber)) && isTrueValidateCodeBy18IdCard(idNumber) ? flag = true : flag = false;
            return flag;
        },
        // 将微信消息的xml文本转为json
        xml2json: xmlString => {
            printData("正在处理xml数据转json：", xmlString);
            var doc = new xmldoc.XmlDocument(xmlString);
            var json = {};
            doc.eachChild((child, index, array) => {
                json[child.name] = child.val;
            });
            printSuccess("xml2json转换完成：", json);
            return json;
        },
        json2xml: jsonDoc => {
            printData("正在处理json数据转xml：", jsonDoc)
            var temp = jsonDoc.ToUserName;
            jsonDoc.ToUserName = jsonDoc.FromUserName;
            jsonDoc.FromUserName = temp;
            jsonDoc.Content = "我们正在努力完善升级中，不久将带来全新功能体验，敬请期待";
            var xmlString = "<xml>" + "<CreateTime>" + Math.ceil((new Date()).getTime() / 1000) + "</CreateTime>";
            for (key in jsonDoc) {
                xmlString += "<" + key + "><![CDATA[" + jsonDoc[key] + "]]></" + key + ">";
            };
            xmlString += "</xml>";
            printSuccess("json2xml转换完成：", xmlString);
            return xmlString;
            // return new xmldoc.XmlDocument(xmlString);
        },
        // 向微信请求数据
        /*responseFromWX: co.wrap(function* (url, method, data, contentType) {
            typeof data == 'string' ? data.indexOf('<xml>') > -1 ? true : contentType = data : data = JSON.stringify(data);
            var result = yield fetch(url, {
                method: method,
                headers: {
                    'Content-Type': contentType || "text/xml"
                },
                body: data
            }).then(function (response, err, msg) {
                var buffer = response.body._readableState.buffer;
                var str = buffer.toString("utf-8", 0);
                return str;
            });
            return result;
        }),*/
        // 随机生成字符串
        randomString: (len) => {
            len = len || 32;
            var $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890';
            // var $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';    /****默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1****/
            var maxPos = $chars.length;
            var str = '';
            for (i = 0; i < len; i++) {
                str += $chars.charAt(Math.floor(Math.random() * maxPos));
            };
            return str;
        },
        extend: function (obj) {
            delete arguments[0];
            var target = obj;
            for (var i in arguments) {
                var flag = a_b(target, arguments[i]);
            }
            return flag

            function a_b(a, b) {
                if (typeof a == 'object' && typeof b == 'object') {
                    var _f = false;
                    for (var key in b) {
                        a.hasOwnProperty(key) ? a_b(a[key], b[key]) : a[key] = b[key];
                    }
                } else {
                    a == b ? false : a = b;
                }
                return a;
            }
        },
        getSign: function(json) {
            var md5 = require("md5");
            printData("正在生成sign:", json);
            var _json = json;
            var _key = _json.key;
            if(_json.key){
                delete _json.key;
            }
            // 获取json参数名的字典排序
            var ov = Object.keys(_json).sort();
            var str = '';
            // 按照字典排序将参数进行URL键值对拼接
            for (var i = 0; i < ov.length; i++) {
                i == 0 ? str += ov[i] + '=' + _json[ov[i]] :
                    str += '&' + ov[i] + '=' + _json[ov[i]];
            }
            _key ? str += "&key=" + _key : false;
            print("签名加密字符串：", str);
            var sign = md5(str.toString()).toUpperCase();
            printData("生成sign:", sign);
            return sign;
        }
    };
} ());